NaturBrush children's toothbrush is made of biodegradable bamboo. Nature gives you this toothbrush made from 100% Moso bamboo: ecological, anti-fungal and antibacterial. Naturbrush's bamboo is 100% MOSO, it comes from the forests of Ningbo. It is ecological as it grows and thrives without fertilizers, pesticides and without any type of chemical additive. This variety is antibacterial and antifungal due to a substance called "bamboo kun", an antimicrobial agent that helps the plant resist attacks by pests and fungi.